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Last updated 19 Nov 2008 at 5:04pm

Momoho Disclosure Notice

31 July 2008

New Zealand Oil & Gas Ltd (NZOG) advises that as at 2.00pm on 30 July the drilling rig was waiting for appropriate weather conditions to set the final surface cement plug and conduct a seabed survey, prior to jacking down and moving off the Momoho location.

A suitable weather window is expected early next week.

Momoho is 6 kms southeast of the Kupe central field, off the coast of South Taranaki.

Drilling began on 13 June 2008 and progress is summarised as follows:
Well section: 36inch 22inch 17inch 12 1/4inch 8-1/2inch
Planned Depth: 170.5m 550m 1,830m 2,855m 3,142.5m
Actual Depth*: 180m 561m 1,845m 2,898m 3,145m
*Depths are cumulative and show total well depth measured below the rotary table (MDRT).

ENDS.

Partners in the Kupe permit PML38146 are:
Origin Energy Limited (through its subsidiary Origin
Energy Resources (Kupe) Limited) 50% (Operator)
Genesis Energy (through wholly owned subsidiaries) 31%
New Zealand Oil & Gas Limited (through wholly owned subsidiaries) 15%
Mitsui E&P Australia Pty Ltd 4%

 * indicates required field